The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 26, 1995
Filed:
Nov. 15, 1993
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A vehicular cornering lamp system which can be adapted to all types and models of vehicles without having to change the correspondence of the illuminating angle with specific characteristics of the vehicle. The angular velocity of the vehicle is detected when the vehicle is traveling on a curve by an angular velocity sensor. Pulses from a distance sensor are counted to detect the vehicle's velocity. Angular velocity data and vehicle velocity data are latched by respective latch circuits. The reciprocal of the turning radius is calculated directly by dividing the angular velocity data by the vehicle velocity data in a divider. There is carried out an arithmetic operation of calculating the reciprocal of the turning radius after calculating the turning radius by dividing the vehicle velocity data by the angular velocity data. The illuminating angle can be approximated as a simple inverse function with respect to the turning radius. The target position of the illuminating angle is calculated as an inverse function with respect to the turning radius so that the illuminating angle of headlamp is controlled so as to be coincident with the target position.